While tuning costs and methods can vary based on the type and condition of the piano, all pianos can be tuned. Miniature, older, and over-damped pianos may be more challenging due to factors like shorter strings, corroded parts, or loose tuning pins, which can affect stability. These factors might require more complex and costly procedures, such as pitch raises for severely out-of-tune instruments. Nonetheless, even the most challenging pianos can be restored to proper pitch with expert care and experience.